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  1. Reducibility of Questions to Sets of Questions: Some Feasibility Results.Piotr Lesniewski & Andrzej Wisniewski - 2001 - Logique Et Analyse 173:93-111.
  2. On existence and some Ontologies.Katarzyna Gan-Krzywoszyńska & Piotr Leśniewski - 2009 - Ruch Filozoficzny 66 (1).
     
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  3. Values in Social Structures. An Outline of a Formal Study.Piotr Lesniewski - 2007 - In Ewa Czerwińska-Schupp (ed.), Values and Norms in the Age of Globalization. Peter Lang. pp. 1--30.
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